Bird Technologies 8730 Series - Manual (Page 30)

Maintenance
18
3. Bottom the resistor in the fitting.
4. Put the resistor and center conductor in the load housing [0].
5. Screw the flow tube [7] into the water chamber assembly. Make sure it is
screwed in completely to avoid damaging the resistor.
6. Put the water chamber [3] back into the load, gently rocking and twisting
the chamber to achieve a flat seat on the outer housing. Line up the holes
with the holes in the load.
7. Tighten the water chamber screws [4].
8. Check the dc resistance between the inner and outer conductors; it should
be about 50 ohms. Record this measurement as the new baseline reading.
9. Connect the load to the coolant supply and cycle the coolant for five min-
utes. Check for leaks.
Replacing the Conductor
1. Remove the screws [9] from the RF connector.
2. Remove the outer conductor assembly [12].
Note: NOTE: To only replace the outer conductor, install it now
and screw it into place.
3. Remove the center conductor assembly [11] by pulling it carefully out of
the load housing [0].
4. Make sure the resistor [1] and inner flow tube [9] do not come out with the
center conductor.
5. Insert the new center conductor assembly into the load housing.
6. Make sure the resistor fitting makes a snug fit with the resistor.
7. Replace the outer conductor and screw it into place.
Storage and Shipment
Storing the Load Resistor
z Cover Bird 8730 Loads before storing to keep out dust and dirt.
z It is not necessary to install the shipping plug.
z Store in a dry, dust-free environment where the ambient temperature
will remain between –40 and +45 °C (–40 to +113 °F).
Shipping the Load Resistor
1. Drain any remaining coolant from the load.
2. Wrap the load in a generous amount of padding for protection during
transfer.
3. Pack and brace the load in a sturdy wooden crate for shipment.